FK75 Smartwatch User manual:

So After you get this watch! You have to follow these simple steps:

1.     Install The Fund App on your smartphone

2.     Pair your device with the smartwatch via Bluetooth, then The smartwatch timing will be set automatically.

So now you can pass calls, synchronize your calendar or receive smartphone’s notification all directly from the smartwatch, you could also display all Data collected by the smartwatch such as heart rate, step count, or sleep quality directly to your smartphone for a bigger display and better data analysis.

FK75 Smartwatch Full Specs: